MCNP新手入门指南，内附大量radiation案例
MCNP software, suitable for beginners to learn (2016-05-20, Fortran, 13384KB, 下载23次)
非常实用的西门子S7-200程序的例子，适用初学者掌握西门子PLC的编程。
Very practical Siemens S7-200 program examples for beginners to master the Siemens PLC programming. (2013-11-08, Fortran, 295KB, 下载9次)